Companies such as ABI Research, Venture Development Corp. and Frost & Sullivan create reports on the size of the RFID hardware, software and services market, but I don’t believe they break down data by portal readers versus other types of interrogators.
Having said that, I would estimate the number to be fairly small—say, fewer than 1,000. That’s a guess, but it’s based on the fact that not a lot of companies have deployed RFID in warehouses, and those that have often track goods with forklift truck readers, rather than portals.
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—Mark Roberti, Founder and Editor, RFID Journal